# Crypto Global Market Cap & Dominance

> Crypto Global Market Cap & Dominance is a paid API for AI agents from crypto.openverbs.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns total cryptocurrency market capitalization, 24h trading volume, BTC/ETH dominance percentages, 24h market cap and volume changes, and active coin/market counts for the entire crypto market.

## Facts

- Endpoint: POST https://crypto.openverbs.com/v1/market-cap
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-global-market-cap-dominance-170bd880
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CZ5AWgRTPAnDicOh8kvdQ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability crypto-global-market-cap-dominance-170bd880 -d '<json body>'
```

Example prompt: What's the current total crypto market cap, BTC and ETH dominance, and how much has the overall market changed in the last 24 hours?

## When to prefer this

Choose this endpoint when you need whole-market cryptocurrency context rather than data on a specific coin — e.g., to benchmark a single asset's move against broad market trends, assess BTC or ETH dominance shifts, or get aggregate volume and market cap figures. Prefer it over individual coin endpoints when macro perspective is the goal. Use over exchange-specific APIs when you want aggregated cross-market totals.

## Known failure modes

- CoinLore upstream unavailable — may return stale:true with cached data or a 5xx error
- Empty body required but sending additional fields may cause schema validation rejection
- Rate limiting or payment failure ($0.003 USDC x402) returns 402 Payment Required
- Transient network timeout returning no data

## How this service works

Crypto market cap: total cryptocurrency market capitalization (USD), 24h trading volume, Bitcoin (BTC) and Ethereum (ETH) dominance, 24h market-cap change and active coin/market counts. Whole-market context behind any single coin's move. Source: CoinLore.

## Output

A JSON object containing: totalMarketCapUsd (total crypto market cap in USD), total24hVolumeUsd (aggregate 24h trading volume), btcDominancePct (Bitcoin market share %), ethDominancePct (Ethereum market share %), marketCapChange24hPct (24h % change in market cap), volumeChange24hPct (24h % change in volume), activeCoins (count of tracked cryptocurrencies), activeMarkets (count of active trading markets), source (CoinLore), and a stale boolean flag indicating data freshness.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "stale": false,
  "source": "coinlore",
  "activeCoins": 14993,
  "activeMarkets": 28445,
  "btcDominancePct": 59.23,
  "ethDominancePct": 11.59,
  "total24hVolumeUsd": 121697341703.6,
  "totalMarketCapUsd": 2605623336891.86,
  "volumeChange24hPct": 1.15,
  "marketCapChange24hPct": -1.64
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-global-market-cap-dominance-170bd880/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from crypto.openverbs.com](https://www.zero.xyz/host/crypto.openverbs.com/llms.txt)